<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <!-- 表单校验四要素 -->
      <!-- 1. el-form :model 对应的值 表单的数据对象-->
      <!-- 2.el-form :rules 对应的校验规则 -->
      <!-- 3.el-form-item prop 校验的字段 -->
       <!-- 4.表单元素  el-input el-checkbox  v-model 绑定值-->
      <el-form ref="form" :model="loginForm" :rules="rules">
        <el-form-item
          label="账号"
          prop="username"
        >
          <el-input v-model="loginForm.username" />
        </el-form-item>

        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input show-password v-model="loginForm.password" />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="rememberMe">记住我</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="handleLogin">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import {FORM_KEY} from '@/constants/KEY.js'
export default {
  name:'Login',
  data() {
    return {
      loginForm:{
        username:'', //用户名
        password:'' //密码
      },
      rules:{//用户名、密码校验规则
        username:[{required: true,message:'用户名不可为空',trigger:'blur'}],
        password:[{required: true,message:'密码不可为空',trigger:'blur'}]
      },
      rememberMe:true
    }
  },
  methods:{
    handleLogin() {// 用户名admin  密码admin123
        this.$refs.form.validate(async(flag) => {
          if(!flag) return //校验失败返回
          //调用dispatch 
            await this.$store.dispatch('user/loginAction',this.loginForm)//异步
            //用户是否点击记住我
            if(this.rememberMe){
              localStorage.setItem(FORM_KEY,JSON.stringify(this.loginForm))
            }else{
              localStorage.removeItem(FORM_KEY)
            }
            //实现从哪个页面退出的，登录时返回那个页面
             if(this.$route.query.redirect){
              this.$router.push(this.$route.query.redirect)
             }else{
              this.$router.push('/')
             }
        });
      }, 
  },
  created(){
    const loginDate = localStorage.getItem(FORM_KEY)
    //判断有没有存储用户信息
    if(loginDate){
      const {username,password} = JSON.parse(loginDate)
      this.loginForm.username = username
      this.loginForm.password = password
    }
  }
}

</script>

<style scoped lang="scss">
  .login_body {
    display: flex;
  }
  .bg {
    width: 60vw;
    height: 100vh;
    background: url('~@/assets/login-bg.svg') no-repeat;
    background-position: right top;
    background-size: cover;
  }
  .box {
    margin: 200px 10% 0;
    flex: 1;
    .title {
      padding-bottom: 76px;
      font-size: 26px;
      font-weight: 500;
      color: #1e2023;
    }
    ::v-deep() {
      .ant-form-item {
        display: flex;
        margin-bottom: 62px;
        flex-direction: column;
      }
      .ant-form-item-label label {
        font-size: 16px;
        color: #8b929d;
      }
      .ant-input,
      .ant-input-password {
        border-radius: 8px;
      }
    }
  }
  .login_btn{
    width: 100%;
  }
</style>
